There’s a secret about being a speaker—anyone can do it. You don’t have to be Oprah or Warren Buffet to stand in front of an audience and have a message. Anyone with something to say can be a speaker, and with that, gain the publicity, credibility and buzz that comes with it.

No longer beholden to the Pony Express or pneumatic tubes, today’s communiqués are zipped off like magic at the click of a button, reaching their destinations in seconds. But with this new medium also comes a whole new set of rules—and a whole new set of problems. How do you send effective e-mails, for example, and how do you recover from e-mistakes?